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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#pragma once
#include <ixion/matrix.hpp>
#include <ixion/types.hpp>
#include <variant>
#include <string>
namespace ixion {
class matrix;
/**
* Similar to stack_value but does not store a reference; it only stores a
* static value.
*/
class resolved_stack_value
{
// Keep the type ordering in sync with value_type's.
using store_type = std::variant<matrix, double, std::string>;
store_type m_value;
public:
enum class value_type { matrix, numeric, string };
resolved_stack_value(matrix v);
resolved_stack_value(double v);
resolved_stack_value(std::string v);
value_type type() const;
const matrix& get_matrix() const;
double get_numeric() const;
const std::string& get_string() const;
};
template<typename T>
class formula_op_result
{
using store_type = std::variant<T, formula_error_t>;
store_type m_value;
public:
formula_op_result(T v) : m_value(std::move(v)) {}
formula_op_result(formula_error_t err) : m_value(err) {}
operator bool() const { return m_value.index() == 0; }
T operator*() const
{
return std::get<T>(m_value);
}
formula_error_t error() const
{
return std::get<formula_error_t>(m_value);
}
};
} // namespace ixion
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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